If you are a Small Business customer, find additional troubleshooting and learning resources at the Support for Small Business site.

This article lists the version numbers of Microsoft XML Core Services or the Microsoft XML
parser (MSXML). Different versions of MSXML are included with various Microsoft
products, such as Microsoft Windows, Microsoft Internet Explorer, Microsoft Office, and Microsoft SQL Server. MSXML is also updated when you install software updates for various Microsoft products.

Microsoft provides several different XML parsers. The MSXML parser is included in the Msxml.dll file, the Msxml2.dll file, the Msxml3.dll file, the Msxml4.dll file, the Msxml5.dll file, the Msxml6.dll file, and one or more resource files. Notice that Windows HTTP Services (Winhttp*.dll) is also included with some versions of MSXML.

The Microsoft XML parser is a Component Object Model (COM)
implementation of the W3C DOM model. Two versions are associated with each
parser: the release version of the MSXML parser and the actual file version of
the DLL that contains the parser. The release version of the MSXML parser (for
example, versions 2.5, 2.6, 3.0, 4.0, 5.0, and 6.0) identifies the milestone of
development.

MSXML 3.0 support follows the support policy of the OS into which it is built.

MSXML 4.0 is no longer supported by Microsoft.

MSXML 5.0 is supported by the Microsoft Office lifecycle policy.

MSXML 6.0 support follows the support policy of the OS into which it is built or onto which it is installed.

This table includes the version of MSXML that is included in security updates that were released since October 10, 2006.
For more information about the security updates, click the following article numbers to view the articles in the Microsoft Knowledge Base:

32-bit versions of MSXML 3.0 (Wmsxml3.dll.) on 64-bit Windows Server 2003 uses the same MSXML and file version numbers that are listed in this table.

If MSXML 4.0 SP2 (out-of-support in April 2010) is installed on a computer that is running Windows NT, Windows 2000 SP2 and earlier, Windows 2003 RTM, or Windows XP RTM, the WinHTTP5.dll file is installed.

MSXML versions that are included with other Microsoft products and software updates

Msxml4.dll, WinHTTP5.dll, Msxml4a.dll, Msxml4r.dll (the last
two DLLs are resource-only DLLs)

4.00.9406.0

MSXML versions that are included with Microsoft Internet Explorer

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Microsoft Internet Explorer version

Microsoft XML
version (file version)

4.0

1.0 (4.71.1712.5)

4.0a

1.0a (4.72.2106.4)

4.01 (SP1)

2.0a (5.0.2014.0206)

5.0a

2.0a (5.0.2314.1000)

5.0b

2.0b (5.0.2614.3500)

5.01

2.5a (5.0.2919.6303)

5.01 SP1

2.5 SP1 (8.0.5226)

5.5

2.5 SP1 (8.0.5226)

5.5 SP2

2.5 Post-SP2 (8.00.6611.0)

6.0

3.0 SP2 (8.20.8730.1)

6.0 SP1

3.0 SP3 (8.30.9926.0)

MSXML versions that are included with MDAC

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MDAC version (products)

Microsoft XML version (file
version)

MDAC 2.5 (Windows 2000)

2.5 (5.0.2920.0)

MDAC 2.5 SP1 (Windows 2000 SP1)

2.5 SP1
(8.0.5226)

MDAC 2.5 SP2 (Windows 2000 SP2)

2.5 SP2
(8.0.5718.1)

MDAC 2.5 SP3 (Windows 2000 SP3)

2.5 SP3
(8.00.6730.0)

MDAC 2.6 (SQL Server 2000)

2.6 (8.0.6518.1)

MDAC 2.6 SP1 (SQL Server 2000 SP1)

2.6 SP1
(8.1.7502.0)

MDAC 2.6 SP2 (SQL Server 2000 SP2)

2.6 SP2
(8.2.8307.0)

MDAC 2.7 (Windows XP)

3.0 SP2 (8.20.8730.1)

MDAC 2.7 SP1 (Windows XP SP1)

3.0 SP3
(8.30.9926.0)

MDAC 2.8 (Windows Server 2003)

3.0 SP4
(8.40.9419.0)

MDAC 2.8 SP1

3.0 SP7 (8.70.1104.0)

MSXML versions that are included with other Microsoft products

This is not a complete list of MSXML versions that are included
with other Microsoft products.

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Other products

Microsoft XML version (file
version)

Microsoft Security Essentials (Client)

4.0

BizTalk Server 2004

4.0

Microsoft Office Project Server 2003

4.0

Encarta 2003, 2004, 2005, and Student/Encarta 2006

4.0

Works Suite 2006, Works Suite 2005, Works Suite 2004, Works Suite 2003

4.0

Live Communications Server

4.0, 6.0

Application Compatibility Toolkit

4.0, 6.0

URGE

6.0

Microsoft .NET Framework 3.0

6.0

Microsoft Visual Studio 2005

6.0

Microsoft SQL Server 2005

6.0

Microsoft SQL Server 2008

6.0

Student/Encarta 2007

6.0

Zune software version 1.0

6.0

Windows SharePoint Services 3.0

6.0

Note If the MSXML parser is updated on a computer that has Microsoft
Application Center 2000 installed, you must reinstall Application Center 2000.
For more information, click the
following article number to view the article in the Microsoft Knowledge Base: